Integral crucible outer container device for precisely casting equiaxed crystal blades and structural parts

The invention discloses an integral crucible outer container device for precisely casting isometric crystal blades and structural parts. The integral crucible outer container device comprises an outer container, an aluminum silicate felt and a glass asbestos cord. The outer container is of a hollow structure, aluminum silicate felt wraps the outer wall of the outer container, and a glass asbestos cord is wound on the outer surface of the aluminum silicate felt. The thickness of the outer container ranges from 20 mm to 30 mm, the bottom of the inner cavity is of an arc-shaped structure, the bottom of the outer cavity is of a flat-bottom structure, and the outer container does not crack after the temperature difference is 1000 DEG C. The aluminum silicate felt is made of a material resistant to the high temperature of 1200 DEG C, the thickness ranges from 10 mm to 15 mm, the heat preservation effect is good, and powder falling, foam falling and hardening are avoided in the high-temperature state. The glass asbe